MvcCore/views/abstractview.h

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00001 /*  -*- c++ -*-  (for Emacs)
00002  *
00003  *  abstractview.h
00004  *  Digest
00005  * 
00006  *  Created by Aidan Lane on Thu Jun 9 2005.
00007  *  Copyright (c) 2005 Optimisation and Constraint Solving Group,
00008  *  Monash University. All rights reserved.
00009  *
00010  *  This program is free software; you can redistribute it and/or modify
00011  *  it under the terms of the GNU General Public License as published by
00012  *  the Free Software Foundation; either version 2 of the License, or
00013  *  (at your option) any later version.
00014  *
00015  *  This program is distributed in the hope that it will be useful,
00016  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00017  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018  *  GNU General Public License for more details.
00019  *
00020  *  You should have received a copy of the GNU General Public License
00021  *  along with this program; if not, write to the Free Software
00022  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
00023  */
00024 
00025 #ifndef ABSTRACTVIEW_H
00026 #define ABSTRACTVIEW_H
00027 
00028 
00029 #include "mvcbase.h"
00030 
00031 #include <QPointer>
00032 
00033 #include "viewevents.h"
00034 
00035 class AbstractModel;
00036 class AbstractController;
00037 class CEvent;
00038 
00039 
00040 #define DEFINE_CUSTOM_VIEWEVENT_HANDLER                         \
00041   inline virtual void customEvent( QEvent* e ) {                \
00042     VEvent* ve = dynamic_cast<VEvent*>(e); /* slow :-( */       \
00043     if ( ve != 0 ) dispatchEvent(ve);                           \
00044   }
00045 
00046 
00051 class AbstractView : public MvcBase {
00052 
00053 public:
00054   AbstractView( QObject* objectPtr );
00055   virtual ~AbstractView();
00056 
00057   AbstractController* controller() const;
00058   AbstractModel* model() const;
00059 
00060 
00061 protected:
00062   virtual void dispatchEvent( VEvent* );
00063 
00064   virtual void changeControllerEvent( VChangeControllerEvent* );
00065   virtual void modelChangedEvent( VModelChangedEvent* );
00066   virtual void resetEvent( VEvent* );
00067 
00068   void postControllerEvent( CEvent* event );
00069 
00070   const QSet<AbstractView*> childViews();
00071   void addChildView( AbstractView* view );
00072   void removeChildView( AbstractView* view );
00073   void removeAllChildViews();
00074 
00075 
00076 private:
00077   AbstractController* m_controller; // note: can't use QPointer
00078   QPointer<QObject>   m_controllerObject;
00079   AbstractModel*      m_model;      // note: can't use QPointer
00080   QPointer<QObject>   m_modelObject;
00081   QSet<AbstractView*> m_childViews;
00082 };
00083 
00084 
00085 #endif //  ! ABSTRACTVIEW_H

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